diff --git a/grc/foo_wireshark_connector.xml b/grc/foo_wireshark_connector.xml
index 5b6ba0a..4f6187e 100644
--- a/grc/foo_wireshark_connector.xml
+++ b/grc/foo_wireshark_connector.xml
@@ -4,7 +4,22 @@
 	<key>foo_wireshark_connector</key>
 	<category>Foo</category>
 	<import>import foo</import>
-	<make>foo.wireshark_connector($debug)</make>
+	<make>foo.wireshark_connector($tech, $debug)</make>
+
+	<param>
+		<name>Technology</name>
+		<key>tech</key>
+		<value>127</value>
+		<type>enum</type>
+		<option>
+			<name>WiFi</name>
+			<key>127</key>
+		</option>
+		<option>
+			<name>ZigBee</name>
+			<key>195</key>
+		</option>
+	</param>
 
 	<param>
 		<name>Debug</name>
diff --git a/include/foo/wireshark_connector.h b/include/foo/wireshark_connector.h
index 01cca48..bdc441b 100644
--- a/include/foo/wireshark_connector.h
+++ b/include/foo/wireshark_connector.h
@@ -23,12 +23,17 @@
 namespace gr {
 namespace foo {
 
+enum LinkType {
+	WIFI = 127,
+	ZIGBEE = 195
+};
+
 class FOO_API wireshark_connector : virtual public gr::block
 {
 public:
 	
 	typedef boost::shared_ptr<wireshark_connector> sptr;
-	static sptr make(bool debug= false);
+	static sptr make(LinkType type, bool debug= false);
 };
 
 }  // namespace foo
diff --git a/lib/wireshark_connector_impl.cc b/lib/wireshark_connector_impl.cc
index c0a7cb0..3791ffc 100644
--- a/lib/wireshark_connector_impl.cc
+++ b/lib/wireshark_connector_impl.cc
@@ -27,12 +27,13 @@ using namespace gr::foo;
 
 #define dout d_debug && std::cout
 
-wireshark_connector_impl::wireshark_connector_impl(bool debug) :
+wireshark_connector_impl::wireshark_connector_impl(LinkType type, bool debug) :
 	block ("wireshark_connector",
 			gr::io_signature::make(0, 0, 0),
 			gr::io_signature::make(1, 1, sizeof(uint8_t))),
 			d_msg_offset(0),
-			d_debug(debug) {
+			d_debug(debug),
+			d_link(type) {
 
 	message_port_register_in(pmt::mp("in"));
 
@@ -43,7 +44,7 @@ wireshark_connector_impl::wireshark_connector_impl(bool debug) :
 	hdr->thiszone      = 0;
 	hdr->sigfigs       = 0;
 	hdr->snaplen       = 65535;
-	hdr->network       = ZIGBEE;
+	hdr->network       = d_link;
 	d_msg_len = sizeof(pcap_global);
 }
 
@@ -115,6 +116,6 @@ wireshark_connector_impl::general_work(int noutput, gr_vector_int& ninput_items,
 }
 
 wireshark_connector::sptr
-wireshark_connector::make(bool debug) {
-	return gnuradio::get_initial_sptr(new wireshark_connector_impl(debug));
+wireshark_connector::make(LinkType type, bool debug) {
+	return gnuradio::get_initial_sptr(new wireshark_connector_impl(type, debug));
 }
diff --git a/lib/wireshark_connector_impl.h b/lib/wireshark_connector_impl.h
index 348dbf0..d173367 100644
--- a/lib/wireshark_connector_impl.h
+++ b/lib/wireshark_connector_impl.h
@@ -29,8 +29,9 @@ namespace foo {
 			int         d_msg_offset;
 			int         d_msg_len;
 			char        d_msg[256];
+			LinkType    d_link;
 		public:
-			wireshark_connector_impl(bool debug);
+			wireshark_connector_impl(LinkType type, bool debug);
 			virtual ~wireshark_connector_impl();
 			int general_work(int noutput, gr_vector_int& ninput_items,
 					gr_vector_const_void_star& input_items,
@@ -38,10 +39,6 @@ namespace foo {
 			void copy_message(const char *buf, int len);
 	};
 
-	enum LINK_LAYER_PROTOCOL {
-		ZIGBEE = 195
-	};
-
 	struct pcap_global {
 		uint32_t magic_number;   /* magic number */
 		uint16_t version_major;  /* major version number */